Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data
Sea-ice thickness in the Sea ofOkhotsk is estimated for 2004-2008 from ICESat derived free-board under the assumption of hydrostatic balance. Total ice thickness including snow depth (htot) averaged over 2004-2008 is 95 cm. The interannual variability of htot is large; from 77.5 cm (2008) to 110.4 c...
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Online Access: | http://hdl.handle.net/2115/71623 https://doi.org/10.1017/aog.2018.8 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/71623 2023-05-15T13:29:11+02:00 Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data Nihashi, Sohey Kurtz, Nathan T. Markus, Thorsten Ohshima, Kay I. Tateyama, Kazutaka Toyota, Takenobu http://hdl.handle.net/2115/71623 https://doi.org/10.1017/aog.2018.8 eng eng Cambridge University Press http://hdl.handle.net/2115/71623 Annals of glaciology, 59(76): 101-111 http://dx.doi.org/10.1017/aog.2018.8 http://creativecommons.org/licenses/by/4.0/ CC-BY remote sensing sea ice sea-ice geophysics 452 article fthokunivhus https://doi.org/10.1017/aog.2018.8 2022-11-18T01:05:05Z Sea-ice thickness in the Sea ofOkhotsk is estimated for 2004-2008 from ICESat derived free-board under the assumption of hydrostatic balance. Total ice thickness including snow depth (htot) averaged over 2004-2008 is 95 cm. The interannual variability of htot is large; from 77.5 cm (2008) to 110.4 cm (2005). The mode of htot varies from 50-60 cm (2007 and 2008) to 70-80 cm (2005). Ice thickness derived from ICESat data is validated from a comparison with that observed by Electromagnetic Induction Instrument (EM) aboard the icebreaker Soya near Hokkaido, Japan. Annual maps of htot reveal that the spatial distribution of h(tot) is similar every year. Ice volume of 6.3 x 10(11) m(3) is estimated from the ICESat derived h(tot) and AMSR-E derived ice concentration. A comparison with ice area demonstrates that the ice volume cannot always be represented by the area solely, despite the fact that the area has been used as a proxy of the volume in the Sea of Okhotsk. The ice volume roughly corresponds to that of annual ice production in the major coastal polynyas estimated based on heat budget calculations. This also supports the validity of the estimation of sea-ice thickness and volume using ICESat data. Article in Journal/Newspaper Annals of Glaciology Sea ice Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Okhotsk Annals of Glaciology 59 76pt2 101 111 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
remote sensing sea ice sea-ice geophysics 452 |
spellingShingle |
remote sensing sea ice sea-ice geophysics 452 Nihashi, Sohey Kurtz, Nathan T. Markus, Thorsten Ohshima, Kay I. Tateyama, Kazutaka Toyota, Takenobu Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data |
topic_facet |
remote sensing sea ice sea-ice geophysics 452 |
description |
Sea-ice thickness in the Sea ofOkhotsk is estimated for 2004-2008 from ICESat derived free-board under the assumption of hydrostatic balance. Total ice thickness including snow depth (htot) averaged over 2004-2008 is 95 cm. The interannual variability of htot is large; from 77.5 cm (2008) to 110.4 cm (2005). The mode of htot varies from 50-60 cm (2007 and 2008) to 70-80 cm (2005). Ice thickness derived from ICESat data is validated from a comparison with that observed by Electromagnetic Induction Instrument (EM) aboard the icebreaker Soya near Hokkaido, Japan. Annual maps of htot reveal that the spatial distribution of h(tot) is similar every year. Ice volume of 6.3 x 10(11) m(3) is estimated from the ICESat derived h(tot) and AMSR-E derived ice concentration. A comparison with ice area demonstrates that the ice volume cannot always be represented by the area solely, despite the fact that the area has been used as a proxy of the volume in the Sea of Okhotsk. The ice volume roughly corresponds to that of annual ice production in the major coastal polynyas estimated based on heat budget calculations. This also supports the validity of the estimation of sea-ice thickness and volume using ICESat data. |
format |
Article in Journal/Newspaper |
author |
Nihashi, Sohey Kurtz, Nathan T. Markus, Thorsten Ohshima, Kay I. Tateyama, Kazutaka Toyota, Takenobu |
author_facet |
Nihashi, Sohey Kurtz, Nathan T. Markus, Thorsten Ohshima, Kay I. Tateyama, Kazutaka Toyota, Takenobu |
author_sort |
Nihashi, Sohey |
title |
Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data |
title_short |
Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data |
title_full |
Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data |
title_fullStr |
Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data |
title_full_unstemmed |
Estimation of sea-ice thickness and volume in the Sea of Okhotsk based on ICESat data |
title_sort |
estimation of sea-ice thickness and volume in the sea of okhotsk based on icesat data |
publisher |
Cambridge University Press |
url |
http://hdl.handle.net/2115/71623 https://doi.org/10.1017/aog.2018.8 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
Annals of Glaciology Sea ice |
genre_facet |
Annals of Glaciology Sea ice |
op_relation |
http://hdl.handle.net/2115/71623 Annals of glaciology, 59(76): 101-111 http://dx.doi.org/10.1017/aog.2018.8 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/aog.2018.8 |
container_title |
Annals of Glaciology |
container_volume |
59 |
container_issue |
76pt2 |
container_start_page |
101 |
op_container_end_page |
111 |
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1765999105698430976 |